Airtac SC50 Standard Cylinder SC50X135
The AirTAC Airtac SC50 Standard Cylinder SC50X135 is a genuine double-acting standard air cylinder with a Ø50mm bore and 135mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke135 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X135
The SC50X135 is a double-acting tie-rod cylinder delivering 982 N of push force at 0.5 MPa (1767 N at the maximum operating pressure of 0.9 MPa). With a 50 mm bore and 135 mm stroke, it uses a 20 mm diameter piston rod and PT1/4 ports, making it a versatile mid-range actuator for general industrial automation.
This model features a 150 mm body length (dimension A) and a 21 mm adjustable air cushion at each end to decelerate the piston smoothly. The standard TPU seals provide reliable operation in ambient temperatures from -20 to +70 °C. As a genuine AirTAC SC series cylinder, it offers a compact tie-rod design that is shorter than an equivalent ISO 15552 profile cylinder.
Airtac SC50 Standard Cylinder SC50X135 Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X135 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 135 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SC series datasheet. Operating pressure 0.15–1.0 MPa, proof pressure 1.5 MPa, temperature −20 to +70 °C. Confirm against the product label before installation. Thread options: PT (standard) / G.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (approx.) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SC50 Standard Cylinder SC50X135
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×135 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related variants: SCD (double rod), SCJ (adjustable stroke), SCT (multi-position). Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Where the Airtac SC50 Standard Cylinder SC50X135 Is Used
Part Transfer & Sorting
The 982 N push force at 0.5 MPa easily shifts boxes or components on roller conveyors, with the 135 mm stroke providing a clean, repeatable push-off motion.
Clamping & Light Pressing
Ideal for pneumatic clamping fixtures and light assembly presses where a controlled 135 mm advance and a 20 mm rod diameter offer good column strength.
Machine Tool Actuation
Operates guards, doors, or tool changers on CNC machines. The adjustable cushion protects the tooling at the end of the 135 mm travel, reducing vibration.
Is the Airtac SC50 Standard Cylinder SC50X135 the Right Cylinder?
For applications needing slightly more force, consider stepping up to the 63 mm bore (1559 N at 0.5 MPa). If space is tight and the load allows, the 40 mm bore (628 N at 0.5 MPa) offers a smaller footprint. The 135 mm stroke is well within the 1200 mm maximum standard stroke for this bore size.
When replacing an existing cylinder, match five key points: 50 mm bore, 135 mm stroke, PT1/4 port thread, the specific mounting accessory (this is a basic body, order FA/FB/CA/CB/LB/TC brackets separately if needed), and confirm whether a magnetic piston is required for sensors. For strokes over 300 mm, an external guide or guided cylinder is recommended to protect the rod from side-load bending.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SC50 Standard Cylinder SC50X135 FAQ
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 1767 N. The theoretical maximum force at 1.0 MPa is 200 kgf.
No. The AirTAC SC series is a tie-rod cylinder that is physically shorter than an ISO 15552 profile cylinder, so dimensions and mounting interfaces are not interchangeable. It is a direct replacement only for another AirTAC SC50 tie-rod cylinder with matching stroke, port thread, and mounting.
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